In combat

Blackfive has the story:

Army doctrine and training teaches that, when ambushed, move directly into the ambush. Never away, always into it. Believe me, only highly trained and disciplined troops will do that.

Military Police and medics in Iraq broke up an attack on a convoy of semis.

On Sunday afternoon, in a very bad section of scrub-land called Salman Pak, on the southeastern outskirts of Baghdad, 40 to 50 heavily-armed Iraqi insurgents attacked a convoy of 30 civilian tractor trailer trucks that were moving supplies for the coalition forces, along an Alternate Supply Route....

...three armored Hummers that formed the MP Squad under call sign Raven 42, 617th MP Co, Kentucky National Guard, assigned to the 503rd MP Bn (Fort Bragg), 18th MP Bde, arrived on the scene like the cavalry. The squad had been shadowing the convoy from a distance behind the last vehicle, and when the convoy trucks stopped and became backed up from the initial attack, the squad sped up, paralleled the convoy up the shoulder of the road, and moved to the sound of gunfire.

They arrived on the scene just as a squad of about ten enemy had moved forward across the farmer's field and were about 20 meters from the road. The MP squad opened fire with .50 cal machineguns and Mk19 grenade launchers and drove across the front of the enemy's kill zone, between the enemy and the trucks, drawing fire off of the tractor trailers.

The MP's crossed the kill zone and then turned up an access road at a right angle to the ASR and next to the field full of enemy fighters. The three vehicles, carrying nine MPs and one medic, stopped in a line on the dirt access road and flanked the enemy positions with plunging fire from the .50 cal and the SAW machinegun (Squad Automatic Weapon)....

The Squad leader dismounted with his M4 carbine, and 2 hand grenades, grabbed the section leader out of the first vehicle who had rendered radio reports of their first contact. The two of them, squad leader Staff Sergeant and team leader Sergeant with her M4 and M203 grenade launcher, rush the nearest ditch about 20 meters away to start clearing the natural trenchline.

Read the whole thing: it's worth it. There is a link at the end, in the Updates, to a captured video: the attackers had a cameraman with them. He was pretty shakey: most of the time he had the camera pointed at the sky and tree tops, but you still get an idea of what chaos was taking place.